20085097 has 2 divisors, whose sum is σ = 20085098. Its totient is φ = 20085096.

The previous prime is 20085089. The next prime is 20085113. The reversal of 20085097 is 79058002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12362256 + 7722841 = 3516^2 + 2779^2 .

It is a cyclic number.

It is not a de Polignac number, because 20085097 - 2³ = 20085089 is a prime.

It is a super-2 number, since 2×20085097² = 806822242998818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20085017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10042548 + 10042549.

It is an arithmetic number, because the mean of its divisors is an integer number (10042549).

Almost surely, 2^20085097 is an apocalyptic number.

It is an amenable number.

20085097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20085097 is an equidigital number, since it uses as much as digits as its factorization.

20085097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 20085097 is about 4481.6399900037. The cubic root of 20085097 is about 271.8261982604.

The spelling of 20085097 in words is "twenty million, eighty-five thousand, ninety-seven".